Improved link-motion device for steam-engines



` dubbed ,States gaat caa.

EDWARD EARON, OF CHESTER, PENNSYLVANIA, ASSIGrNOR` T0 REANEY, SON & CO.,OE SAME PLACE.

Letters Patent No. 96,903, dated Nocmber 16, 1869.

v IMPROVED LINK-MOTION DEVICE FOR STEAM-ENGINES.

The Schedule referred to in these Letters Patent and making part of thesame.

To all who-m it may concern Be it known that I, EDWARD FARoN, ofChester, county of Delaware, State of Pennsylvania, have invented anImproved Link-Motion for Slide -Valves and I do hereby declare thefollowing to be a full, clear, and exactdescription of the same.

Myinvention consists of' a link-motion constructed in the peculiarmanuel', fully described hereafter, with the view of attaining theimportant qualities of general steadiness and compactness,simplicity,and economy, as regards-construction.

In order to enable others familiar with machinery of this class to makeand apply my invention, I will now proceed to describe its constructionand operation, reference being had to the accompanying drawing, whichforms a part of this specification, and in which- Figure l is afrontview of my improved link-motion for slide-valves Figure 2, a verticalsection on the line 1 2, fig. 1; and

, -Figure 3, a planview ofY the link.

Similar letters refer to similar parts throughout the seweral views.

A is the link, consisting of a solid bar forming the mgment of a ring,the radius of which is determined the usual manner, well known toengineers.

Near eachl end of the link is a pin, a,- each pin receiving the end ofan eccentric rod, as shown ny-dotted lines in iig. 1, and the link isarranged to it snugly but slide freely in a disk' which hasnlips boverlapping the link, as shown in iig. 2.

'lo the rear of the disk is secured, by riveting, or otherwise, asteelplate, ll, and both disk and plate fit so as to turn freely in a recessinthe cross-'head D, to which the steel plate is held bya pin, E, andits nut c, the said pin being concentric with the disk.

. In front of the link is a pin, F, for receiving the ends of a rod, G,shown by dotted lines, g. 1, the said rod being connected to thestarting-lever, or other starting and stopping-appliances.

The valve-rod H is secured to the projection h of the cross-head D, anda guide-rod, j, to another pro-- jection, i., on the same cross-head.

lt will be unnecessary to describe here the method of operating thelilik, or the action of the same on the valve as regards altering thestroke of" the same and reversing or stopping its movements, inasmuch asthe link is caused to perform precisely the same duties as those incommon use. It will suiiice to remark as regards the operation of mylink-motion, that as the disk b is freeto oscillate in the cross-head,it will accommodate itself to all the-varying movements of the link.l

It is the peculiar construction of the link-motion to/ which myinvention especially relates, and the peculiarities may be referred toas follows:

The link, instead of being open, as usual, consists of a simple solidbar. The importance of this feature as regards economy in construction,will be readily understood by engineers without explanation.

l The link passing through the disk, which affords a lengthenedbearing,land the disk being embedded in a recess of the guidedcross-head, the qualities of general steadiness and durability asregards wear and teal' are attained, towhich may be added, as otherqualities of importance, general compactness and simplicity of parts.

I claim as my invention, and desire to secure by Letters Patent- 1. Asolid link, A, arranged to slide iu a disk, l, which is adapted to, andcan oscillate in the cross-head of a valve-spindle, substantially as setforth,

2. lhe plate d, interposed between the disk b and the cross-head, andheld to the latter by alpin, E, concentric with the said disk, allsubstantially as set forth.

In testimony whereof', I have ,signed my name to this specification, iuthe presence of two subscribing Witnesses.

Titnessesz EDWARD FARON.

JOHN LONGBOTHAM, SAMUEL ULRICH.

